Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Satellite in Orbit? - Acceleration & Height of Spy Satellite
- wolly6973
- · Replies 3 ·
Understanding Quantum Numbers and Orbital Values
- President Mercury
- · Replies 3 ·
Calculating Time for Two Cars to Meet in Alaska
- mikefitz
- · Replies 4 ·
Calculating Resultant Velocity for Two Equal Velocities at Right Angles
- thehatchetmen
- · Replies 2 ·
How Long Does It Take for a Police Car to Catch a Speeder?
- AladdinSane
- · Replies 3 ·
What is the initial speed of the ball?
- elitespart
- · Replies 14 ·
Bottom of a pendulum, what is tension
- mikefitz
- · Replies 3 ·
Stranded astronaut returning to spacecraft using conservation of momentum
- Sabres151
- · Replies 3 ·
Retarding force needed to stop a race car with parachute
- Lelex
- · Replies 2 ·
How Does Fluid Dynamics Explain Pressure Differences and Density Calculations?
- laminar
- · Replies 1 ·
How much mass to increase Earth's surface gravity to 10 m/s²?
- Tikiwreck
- · Replies 2 ·
Air Resistance Force on 1.21 g Samara Falling at 1.1 m/s
- ragbash
- · Replies 1 ·
What is the weight of a giant squid in Newtons?
- starfish794
- · Replies 3 ·
Projectile motion(?) solving for Vo
- Pencil
- · Replies 9 ·
Calculating the Angle of Tension in Tightrope Walking: A Physics Problem Solved
- Meowzers
- · Replies 1 ·
Solve Skid's Friction Problem - Calculate Coefficient
- sweetdaisy186
- · Replies 6 ·
Direction of forces (centripetal/friction/tension)
- dnt
- · Replies 1 ·
NH Science Bulletin: Ranking Forces in a Stack of Blocks
- KillianHawkIII
- · Replies 3 ·
Coyote falling from 500m cliff with rocket backpack deceleration
- Tikiwreck
- · Replies 1 ·
When do two runners converging on a flagpole cross paths?
- AladdinSane
- · Replies 2 ·
Plane direction and veloctiy question
- mathzing
- · Replies 1 ·
How Do You Calculate the Acceleration of an Object Using Newton's Laws?
- zeshkani
- · Replies 2 ·
How do charges behave in a spherical conducting shell?
- FrogPad
- · Replies 2 ·
Light reflection from a rocket approaching a mirror at 0.90c
- busted
- · Replies 5 ·
Scaling - The Physics of making my mind go crazy.
- 37fox
- · Replies 3 ·
How Does Gauss's Law Explain Electric Flux with External Charges?
- Noesis
- · Replies 5 ·
What is the optimal angle for maximum distance in a shot put throw?
- Asteldoth
- · Replies 4 ·
Projectiles Launced at an Angle
- Tnn Ace03
- · Replies 1 ·
Pulley Problem, 1 crate hanging, 1 crate on an incline
- cd80187
- · Replies 1 ·
Constant Acceleration Plane Problem
- needhelp83
- · Replies 1 ·
Forces and acceleration of pulled rope
- trajan22
- · Replies 8 ·
Finding the mass of two planets
- prlion16
- · Replies 5 ·
Elastic ball , Inextensible string
- Harshatalla
- · Replies 3 ·
Finding x-ray wavelength from NaCl crystal Bragg reflection at 10°
- hcchong
- · Replies 1 ·
Finding distance and velocity vectors
- kbowman
- · Replies 1 ·
Calculate Young's Modulus and Change in Diameter of Nylon Rope
- hcchong
- · Replies 1 ·
How Do You Calculate Charge Using Coulomb's Law?
- th77
- · Replies 1 ·
How High Would a Bullet Rise if Fired Straight Up Without Air Resistance?
- needhelp83
- · Replies 2 ·
How small is a water molecule compared to the volume of liquid water?
- hcchong
- · Replies 1 ·
Orbitals, shells, subshells, oh my
- President Mercury
- · Replies 3 ·
Speed to feel weightless over a 35m radius bump
- sweetshelly
- · Replies 6 ·
Maximum range angle for trebuchet with 46 m height difference
- Rowah
- · Replies 5 ·
Solving Basic Thermo Questions: Calculating Velocity and Area in an Open System
- rjenkins
- · Replies 1 ·
How Do You Calculate Acceleration from Position and Time Data?
- mixedtape_15
- · Replies 2 ·
Why does a non-uniform field only pass through two faces of a cube?
- greenmaze
- · Replies 8 ·
Help with Problem: Find Distance Travelled in First 5.0s
- Alanf718
- · Replies 3 ·
Two dimensional motion with constant acceleration problem,
- alexkolb
- · Replies 1 ·
Complicated logarithm problemor at least i think it is
- QuantumKing
- · Replies 11 ·
Force using Newton's second law
- ruthi
- · Replies 1 ·
What equations can be used to determine acceleration in constant motion?
- pieman396
- · Replies 5 ·
Two conducting spheres problem
- mb85
- · Replies 7 ·
Calculating Forces and Speed in a Sprinter's 100m Dash
- hkhero
- · Replies 3 ·
How Do You Solve Inclined Plane Problems in Physics?
- pavadrin
- · Replies 6 ·
What is the Velocity at Half the Distance with Constant Acceleration?
- siddharthmishra19
- · Replies 1 ·
Why does light always travel at the same speed relative to me?
- danago
- · Replies 2 ·
Solar sail reflecting a photon gives sail speed c—where's my error?
- JoAuSc
- · Replies 3 ·
Projectile motion with asymmetric takeoff and landing heights
- alexkolb
- · Replies 4 ·
Powerboat crossing 370-m river with 1.7 m/s current to reach upstream clearing
- mb8992
- · Replies 3 ·
Finding acceleartion components
- ultrabionic_ang
- · Replies 1 ·
How long was it in the air before returning to Earth?
- Hydrantman001
- · Replies 9 ·
Kinematics - Constant acceleration and friction
- Kaoi
- · Replies 6 ·
Physics Assesment, Physics of Bomby Contests
- Clarky
- · Replies 1 ·
Can You Explain Your Solution Using Pulleys and Friction?
- anthu
- · Replies 1 ·
Solve for Knights' Collision Point
- skud363
- · Replies 4 ·
Centripetal force circular drum question
- Checkfate
- · Replies 6 ·
Pitch in open and closed organ pipes of equal length
- Dunkaroos
- · Replies 1 ·
How Can You Design a Ramp for Consistent Ball Rolling?
- Crystal Faye
- · Replies 38 ·
Solving Power/Work Problem: Average Power of Elevator
- Aubiefan
- · Replies 3 ·
Why does increasing y-velocity in my juggling simulation decrease x-velocity?
- Meowzers
- · Replies 1 ·
Is Acceleration Equal to Net Force Divided by Mass in Newton's Second Law?
- jjg242
- · Replies 1 ·
Negative time from Lorentz transformation of event in S
- Orad
- · Replies 3 ·
How Do You Calculate Initial Velocity and Displacement of a Thrown Stone?
- siddharthmishra19
- · Replies 5 ·
Solving Flight & Velocity Problem in Cutnell & Johnson Physics
- mmiller39
- · Replies 3 ·
Why isn't this working 2D Kinematics
- mmiller39
- · Replies 13 ·
Why does my relativistic Doppler calculation give wrong signal intervals?
- michael879
- · Replies 4 ·
Verifying Newton's Laws: Finding Acceleration & Contact Forces
- konichiwa2x
- · Replies 3 ·
Fluid Mechanics - U-tube and mercury
- jkb
- · Replies 1 ·
Net force on a decelerating 1600.3 kg car
- ant124m
- · Replies 7 ·
Tungsten filament temperature from radiated power, emissivity and area
- sickid
- · Replies 1 ·
Measuring Height to Calculate Froghopper Jump Height
- parwana
- · Replies 2 ·
Kinematics (constant acceleration)
- HelenaBeena
- · Replies 5 ·
Projectile motion: find velocities and max height given T, Dx, angle
- Stephanie
- · Replies 2 ·
Find time if boxes moved X distance
- sweetdaisy186
- · Replies 4 ·
Kinematic Equations - Manipulating them.
- Huynher
- · Replies 1 ·
What is the Initial Velocity of a Ball Thrown off a Cliff?
- QuantumKing
- · Replies 4 ·
Solving for Earth's Deflection of a Baseball Throw
- panagiotiskorel
- · Replies 1 ·
How Do You Calculate Constant Deceleration to Prevent a Train Collision?
- OVB
- · Replies 5 ·
How fast are we traveling around the galaxy?
- kens
- · Replies 1 ·
Vector Direction (west of North)
- baqi
- · Replies 12 ·
Box Mass and Friction: Calculating Time Before Fall
- trajan22
- · Replies 2 ·
Finding initial speed for package to stop at top of 8m ramp
- trajan22
- · Replies 7 ·
Voltage and Electro Potential Energy
- himura137
- · Replies 4 ·
What is the average deceleration during braking?
- needhelp83
- · Replies 2 ·
Find Velocity of 2nd Ball Thrown at 25 Degrees - 6.32 m/s
- BunDa4Th
- · Replies 2 ·
Relative Motion of River in Two Dimensions
- johndoe3344
- · Replies 3 ·
Forces, blocks, cords, and springs
- mybsaccownt
- · Replies 5 ·
Electric field from excess electrons on sphere and two line charges
- swami85
- · Replies 1 ·
Proving maximum speed of a mass on a spring is 2πfA
- Fittler
- · Replies 2 ·